package java8;

/**
 * Created by Administrator on 2017/5/17.
 */
public class StringUser {

    public static void append(String str) {
        str = str + "5";
    }

    public static void main(String[] args) {
        String str = "1234";
        append(str);
        System.out.println("str=" + str);
    }
}
